package cn.kgc.zuxin.controller;

import cn.kgc.zuxin.common.R;
import cn.kgc.zuxin.entity.Employee;
import cn.kgc.zuxin.service.EmployeeService;


import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;

import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import lombok.extern.slf4j.Slf4j;
import org.springframework.util.DigestUtils;

import org.apache.commons.lang.StringUtils;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import java.time.LocalDateTime;


/**
 * 员工管理
 *
 * @author : 磊
 * Creat Date : 2022/10/17 23:12
 */
@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Resource
    EmployeeService employeeService;

    /**
     * 员工登录
     *
     * @param employee
     * @param
     * @return R
     */
    @PostMapping("/login")
    public R<Employee> login(@RequestBody Employee employee, HttpSession session) {

        //1.将页面提交的密码进行md5加密

        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //2.根据页面提交的用户名查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        //3.如果没查询到,则返回失败
        if (emp == null) {

            return R.error("用户名错误");
        }

        //4.密码比对,如果不一致则返回失败
        if (!emp.getPassword().equals(password)) {
            return R.error("密码错误");
        }

        //5.判断员工状态是否被冻结,如果被禁用,则返回失败
        if (emp.getStatus() == 0) {

            return R.error("账号已被禁用");
        }

        //6.登录成功将员工id放入session并返回登录结果
        session.setAttribute("employee", emp);
        System.err.println(session.getAttribute("employee"));
        return R.success(emp);

    }

    /**
     * 员工退出
     *
     * @param request
     * @return R
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request) {
        //1.清理session中的员工对象
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 新增员工
     *
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpSession session, @RequestBody Employee employee) {
        log.info("新增员工,员工信息: {}", employee.toString());

        //设置初始密码,并使用md5加密
        employee.setPassword(DigestUtils.md5DigestAsHex("sakura18183".getBytes()));

        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());
        //获得当前登录的用户id
        Employee emp = (Employee) session.getAttribute(("employee"));


        employee.setCreateUser(emp.getId());
        employee.setUpdateUser(emp.getId());

        employeeService.save(employee);

        return R.success("新增员工成功");

    }

    /**
     * 员工信息分页查询
     *
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {
        log.info("page = {},pageSize = {},name = {}", page, pageSize, name);

        //构造分页构造器
        Page pageInfo = new Page(page, pageSize);

        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper();
        //添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName, name);
        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);
        //执行查询
        employeeService.page(pageInfo, queryWrapper);

        return R.success(pageInfo);
    }

    /**
     * 根据id修改员工信息
     *
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpSession session, @RequestBody Employee employee) {

        log.info(employee.toString());
        //将当前时间赋值给修改时间
        employee.setUpdateTime(LocalDateTime.now());
        //从session中获取员工对象
        Employee emp = (Employee) session.getAttribute
                ("employee");
        //赋值修改员工
        employee.setUpdateUser(emp.getId());

        employeeService.updateById(employee);

        return R.success("员工信息修改成功");
    }

    /**
     * 根据id查询员工信息
     *
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id) {
        log.info("根据id查询员工信息");

        Employee byId = employeeService.getById(id);

        if (byId != null) {

            return R.success(byId);
        }
        return R.error("没有查询到对应员工信息");
    }
}
